79 lines
2.5 KiB
Python
79 lines
2.5 KiB
Python
from sqlalchemy.orm import Session
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from sqlalchemy import func
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from model.wl_student_model import Student
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from model.wl_class_model import Class_ # 你同学写的
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from scheme.wl_student_scheme import StudentCreate, StudentUpdate
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# ---- 学号生成 ----
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def generate_stu_no(db: Session, class_id: int, seq: int = None) -> str:
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#非测试就解除下面5行测试，注释date_str = "20260912"
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cls = db.query(Class_).filter_by(class_id=class_id).first()
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if not cls or not cls.start_time:
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raise ValueError("班级不存在或未设置开班时间")
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date_str = cls.start_time.strftime("%Y%m%d")
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# 直接写死一个日期字符串用于测试
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# date_str = "20260912"
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if seq is None:
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count = db.query(func.count(Student.stu_id)) \
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.filter(Student.class_id == class_id).scalar() or 0
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seq = count + 1
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return f"{date_str}{seq:03d}"
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# ---- 增 ----
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def create_student(db: Session, data: StudentCreate) -> Student:
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stu_no = generate_stu_no(db, data.class_id)
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stu = Student(stu_no=stu_no, **data.model_dump())
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db.add(stu)
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db.commit()
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db.refresh(stu)
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return stu
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# ---- 查（多条件）----
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def search_students(db: Session, stu_no=None, stu_name=None,
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class_id=None, advisor_id=None, status=None):
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q = db.query(Student).filter(Student.is_deleted == 0) # 若加了逻辑删除字段
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if stu_no:
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q = q.filter(Student.stu_no.like(f"%{stu_no}%"))
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if stu_name:
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q = q.filter(Student.stu_name.like(f"%{stu_name}%"))
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if class_id:
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q = q.filter(Student.class_id == class_id)
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if advisor_id:
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q = q.filter(Student.advisor_id == advisor_id)
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#学生model没有status，先注释
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# if status:
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# q = q.filter(Student.status == status)
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return q.all()
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def get_student_by_no(db: Session, stu_no: str) -> Student | None:
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return db.query(Student).filter(
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Student.stu_no == stu_no,
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Student.is_deleted == 0
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).first()
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# ---- 改 ----
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def update_student(db: Session, stu_no: str, data: StudentUpdate) -> Student | None:
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stu = get_student_by_no(db, stu_no)
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if not stu:
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return None
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for k, v in data.model_dump(exclude_unset=True).items():
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setattr(stu, k, v)
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db.commit()
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db.refresh(stu)
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return stu
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# ---- 逻辑删 ----
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def delete_student(db: Session, stu_no: str) -> bool:
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stu = get_student_by_no(db, stu_no)
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if not stu:
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return False
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stu.is_deleted = 1
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db.commit()
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return True |